photometer, polarimetry, josephson junction, cryostat, toroid, monochromator, microbalance, airglow, resonant cavity, reflectometer, electret, scintillator, spectroscopic analysis, dipole moment, pyrometer, spectro, absorption coefficient, sensor, magnetoresistance, spectrometer, retroreflector, backscattering, spectroscope, photomultipliers, manganite, photoluminescence, cuvette, rheometer, imager, electron optics, detector, eclipsing binary, photocells, calorimeter, photomultiplier, semiconducting material, infrared, parabolic reflector, paramagnetic, corona discharge, spectrographic, deimos, waveband, galvanometer, heterodyne, photodetector, electromotive force, thermopile, blackbody, coronagraph, interferometer, subminiature, multispectral, collimator, gauss, dipole antenna, resonators, circular polarization, micromanipulator, voltage divider, radiometer, lightwave, strain gauge, diffractometer, zeiss, luminosities, piezoelectric crystal, fluidics, photocurrent, ammeter, chemiluminescence, magnetisation, exosphere, phototransistor, grond, tonometer, gradiometer, spectroscopy, ferrites, thermistor, mesosphere, fluorometer, iris diaphragm, astronomical telescope, microspectrophotometer, dispersive, thermal emission, electroluminescence, photoelectron, dipolar, nernst, photometry, triaxial, frustum, waveguide, manometer, colorimeter, titrator, tomograph, jovian, goniometer, antineutrino, preamplifier, thermometer, absorber, detectors, receiver, thermocouple, transducer, amplifier, anemometer, injector, probe, semiconductor, thermostat, transistor, antenna, capacitor

bologram, bolograph, bolometric, langley, samuel pierpoint langley

measuring instrument, measuring system